The normal bearing mounting complexes full lubrication, the original lubricating oil does not enter the upper half of the machine tool spindle bearings suspected of being excluded. But all the inner ring channel has indentation or indentations or surface cracking fatigue spalling, rather than subsurface spalling type failure, fuel supply is not in full when this phenomenon occurs.
These foreign bodies and the resulting indentation damage the integrity of the film, caused the spindle bearings early failure of fatigue by experimental verification, the above judgment is correct.
The development of "the seal clean" type bearing great success. This bearing is original with standard bearings on both sides of each plus a special rubber seal structure, characterized by such seals are mainly used to prevent dirt intrusion bearings, with the main purpose is to keep the grease - like machine tool spindle bearings seals.
1, through the surface feel bearing quality
I find a lot of customers in the sale of the Swedish bearing bearing surface brightness is of good quality, which is wrong. Bright surface of the machine tool spindle bearings should be the kind of glossy black, cause this raven whether bearing steel standards and the grinding process and cutting fluid produced, which the previous two main.
2, chamfer is bright
Chamfered spindle bearings does not determine the quality of stainless steel bearings, but it reflects a processing method of the bearing. Chamfer is black, after the hardening heat treatment, thus increasing the hardness of the bearing, and some people think chamfered ugly black is not processed completely, which is a misunderstanding.
Integrated cage is better than the two-body and new technology to use one of the cage, but it just saves material, and worse than the two-body rotation and other properties.
Overall, the service life of the machine tool spindle bearings with three factors have bearing its own quality. The second is the use of the environment. Third, the installation method.
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